chemical indicator


Also found in: Medical, Wikipedia.

chemical indicator

[′kem·i·kəl ′in·də‚kād·ər]
(analytical chemistry)
A substance whose physical appearance is altered at or near the end point of a chemical titration.
A substance whose color varies as the concentration of hydrogen ions in the solution to which it is added varies. Also known as indicator.
References in periodicals archive ?
An internal chemical indicator should be placed in every sterilization package to ensure the sterilization agent has penetrated the packaging material and actually reached the instruments inside.
Trimethylamine, a chemical indicator of seafood spoilage, was not found during the gas chromatographic analysis of the volatile compounds in any of the treatments.
Bone quality is measured by both density and turnover, and serum parathyroid hormone (PTH) levels were seen as significantly correlated with lower levels of osteocalcin - a chemical indicator of bone turnover - in both men and women with type 2 diabetes.
Bone quality is measured by both density and turnover, and serum parathyroid hormone (PTH) levels were seen as significantly correlated with lower levels of osteocalcin-a chemical indicator of bone turnover-in both men and women with type 2 diabetes.
To which colour does an alkali change the chemical indicator litmus paper?
System 1E received regulatory clearance for sale in April 2010, but Steris did not immediately ship the product because it was waiting for FDA approval of two accessory parts: a chemical indicator and a biologic indicator.
The bottle contains a dried mixture of all of the nutrients required to help the bacteria grow ( under conditions similar to those in the human gut( along with a chemical indicator that changes colour to black if E.
Saliva thiocyanate: a chemical indicator of cigarette smoking in adolescents.
One chemical indicator and one electronic indicator had data readings outside of the published product specifications, which when used in the field, could lead to false negatives.
The report includes a detailed value chain analysis, which provides a comprehensive view of the global chemical indicator inks market.

Full browser ?